Apollo Conbraco PVB4A Installation Manual

BFMM PVB4A 1-2012

1/2” - 2”
Pressure Vacuum Breaker (PVB) Backow Preventer

Model PVB4A

INSTALLATION, OPERATION, & MAINTENANCE MANUAL

TABLE OF CONTENTS

Pressure Type Vacuum Breaker 1/2” – 2”

Section Page

I Description and Operation ......................................................................3

II Installation .....................................................................................3

III Trouble Shooting Guide.........................................................................4

IV Maintenance Instructions .......................................................................5

V Testing Procedures............................................................................6-7

Parts List

Parts List (1/2”- 2”) .......................................................................... 8-10

Repair Kits

Repair Kits (1/2”- 2” ) ..........................................................................11

2

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BFMM PVB4A

PRESSURE TYPE VACUUM BREAKER 1/2” – 2”

I. DESCRIPTION AND OPERATION

The Apollo PVB4A Series Pressure Type Vacuum Breaker consists of a replaceable check valve cartridge and a unique atmospheric
vent bonnet/oat assembly located between two resilient seated shut-o valves. The modular design allows for unprecedented
ease of inspection and maintenance.

During normal ow conditions, the check valve remains open and the oat seals on the bonnet assembly. A minimum supply
pressure of 10 psig is normally required to fully shut the oat. As the line pressure falls to 1 psig, a spring-loaded atmospheric
vent valve opens, breaking the vacuum and thereby preventing back-siphonage. In the event of exposure to short-term freezing
temperatures, a spring-loaded relief valve in the oat protects the PVB body and internal components from damage. As the
temperature increases above freezing, the relief valve automatically reseats. During normal operating conditions, the relief valve
will not discharge.

NOTE: The freeze resistant feature is for a short term dip in temperature. The PVB should be winterized for extended periods
below freezing.

II. INSTALLATION

Pressure vacuum breaker assembly’s critical level (CL is marked in raised lettering on the body of the PVB) should be installed at
least 12 inches above the highest piping or outlet downstream of the device and with the supply line connected to the bottom of
the device. Install the device in an accessible location to facilitate periodic eld-testing and any required maintenance. Contact
local water authorities for installation/service requirements.

Flush upstream piping thoroughly to remove foreign matter prior to installation. Use pipe dope sparingly on external threads
only. When initially pressurizing the device, some spillage of water from the air inlet may occur.

To winterize the valve:

1. Secure the water source at a location that will not freeze.

2. Open #1 and #2 test cocks to drain the PVB.

3. Place the inlet and outlet isolation ball valves in the halfway open/shut position.

4. If possible, blow the lines clear with pressurized air.

Customer Service [phone] www.apollovalves.com

3

INSTALLATION, OPERATION, & MAINTENANCE MANUAL

Figure 1

(FLOWING CONDITION)

Figure 2

(NO FLOW CONDITION)

III. TROUBLE SHOOTING

SYMPTOM CAUSE CORRECTIVE ACTION

1. Air inlet fails to open or opens
below 1 psig.

2. Air inlet fails to close.

3. Check valve fails to hold 1 psig.

4. Water continues to ow from test
cock #2 during test #2.

a. Float not moving freely.

b. Float disc sticking to seat.

a. Float not moving freely.

b. Float disc fouled with debris.

a. Check valve fouled with debris.

b. Check valve seat damage.

a. #1 shut-o valve not completely
closed

a. Inspect for fouling debris or
deposits.
b. Clean oat seat area on bonnet
and replace oat disc/turn disc
over.

a. Inspect for fouling debris or
deposits.
b. Clean oat seat area on bonnet
and remove debris.

a. Remove, clean, or replace check
valve.
b. Replace seat

a. Close #1 shut-o valve.

4

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BFMM PVB4A

IV. MAINTENANCE INSTRUCTIONS 1/2” – 2”

A. Disassembly

1. Close #2 shut-o valve, then close #1 shut-o valve.

2. Bleed pressure from device by opening test cocks #1 and #2.

3. Remove the air inlet canopy by loosening the two screws, rotating the canopy to the left, and lifting up.

4. Unscrew and remove the bonnet and oat assembly. DO NOT USE CANOPY TO UNSCREW BONNET! DAMAGE TO THE
CANOPY MAY OCCUR.

5. Remove oat cage.

6. Push down and turn the spring retainer 90° to remove. Remove the spring. Remove the poppet from the check seat.

CAUTION: Do not use pliers or other tools, which may damage or scratch the plastic stem.

7. Holding the poppet assembly in one hand, remove screw and retaining washer.

8. Remove the seat disc.

9. All parts should be carefully inspected for any damage or excessive wear and thoroughly rinsed in clean water prior to
reassembly. Replace worn parts as necessary.

10. Normally, the check seat need not be removed. If removal is required, rock it back and forth while pulling outward.

B. Assembly

1. If the check seat was removed, install the new o-ring and lubricate with Apollo supplied lubricant, DOW 111, or equal. Line
up the seat with the bore and push it rmly into place.

2. Install new disc in poppet and secure with washer and screw.

3. Place and center the poppet assembly in the check seat.

4. Install the spring onto the poppet, ensure that it is centered around the raised spring pad.

5. Install the spring retainer onto the spring by pushing down into the grooves of the check seat and turning 90°. Ensure spring
retainer pops up about .1” and locks into the lugs. CAUTION: Ensure the spring retainer orientation matches that in the

parts list drawing or the device’s ow will be signicantly restricted.

6. Install oat cage and oat. See drawing for correct orientation.

7. Apply a thin coat of Apollo supplied lubricant, DOW 111 or equal onto o-ring, screw bonnet into body.

8. Test device to insure proper installation.

9. Install air inlet canopy.

Customer Service [phone] www.apollovalves.com

5

INSTALLATION, OPERATION, & MAINTENANCE MANUAL

V. TESTING PROCEDURES

Equipment Required: Dierential Pressure Test Kits 40-200-TKU or 40-200 TK5U.

NOTE: These procedures may or may not be approved in all jurisdictions. Consult your local water purveyor for acceptable
test procedures.

Test Setup

1. Obtain permission to shut o the water supply.

2. Determine the direction of ow.

3. Identify and “blow out” test cocks and install appropriate adapters (if necessary).

4. All test kit valves are closed.

IMPORTANT: THE TEST KIT AND HOSE MUST BE HELD AT THE SAME LEVEL AS THE PVB DURING TESTS 1 AND 2.

TEST NO. 1

DOES THE AIR INLET VALVE OPEN WHEN THE PRESSURE IN THE BODY IS AT LEAST 1 PSI ABOVE ATMOSPHERIC PRESSURE? IS
THE AIR INLET VALVE FULLY OPEN WHEN WATER DRAINS FROM THE BODY?

1. Remove air inlet valve canopy.

2. Connect a hose between test cock #2 and the high side connection on the test kit. Open test cock #2.

3. Bleed the high side by opening bleed high valve (high and bypass valves on a 3-valve test kit). Close the bleed high valve
(high valve on 3-valve test kit).

4. Close #2 shut o valve, and then close #1 shut o valve.

5. SLOWLY open the bleed high valve (high valve on 3-valve test kit) no more than 1/4 turn, dropping the pressure slowly.
Record pressure reading when the air inlet valve opens. It should be 1PSI or higher. If the air inlet valve does not open
go to step #8.

6. Fully open the bleed high valve (high valve on 3-valve test kit). Check if the air inlet valve is fully open. Close the bleed high
valve (high valve on a 3-valve test kit).

7. Close test cock #2. Disconnect the high hose from test cock #2. Open shut o valve #1. Proceed to Test #2.

8. The #1 shut o valve is leaking. Open and close shut o valve #1 to attempt a better seal. Repeat step #6. If step #6 cannot
be passed go to step #9.

9. SLOWLY open test cock #1 until the gauge reading starts dropping. Record the pressure reading when the air inlet valve
opens. (It should be 1 PSI or higher.) Return to step #7. If test cock #1 is fully open and the air inlet valve has not opened,
shut o valve #1 must be repaired or replaced.

TEST NO. 2

DOES THE CHECK VALVE SEAL IN THE DIRECTION OF FLOW WHEN THE INLET PRESSURE IS 1 PSI ABOVE ATMOSPHERIC
PRESSURE? – PRESSURE TIGHT #1 SHUT-OFF VALVE

1. Connect high side hose to test cock #1. Open test cock #1.

2. Bleed the high side by opening the bleed high valve (high valve on a 3-valve test kit). Close the bleed high valve (high valve
on a 3-valve test kit).

3. Close shut o valve #1 then open test cock #2.

4. Record the gauge reading when water stops draining from test cock #2. It should be 1 PSI or higher.

5. Close all test cocks. Open both shut o valves. Remove all test equipment. Replace air inlet valve canopy. Drain test kit.

6

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BFMM PVB4A

V. TESTING PROCEDURES (continued)

TEST NO. 3

LEAKY #1 SHUT-OFF VALVE

1. Connect a bleed-o valve assembly (not included with test kit) to test cock #1.

2. Connect high side hose to the bleed-o valve. Open test cock #1.

3. Bleed the high side by opening the bleed high valve (high valve on a 3-valve test kit). Close the bleed high valve (high valve
on a 3-valve test kit).

4. Close shut o valve #1, then open test cock #2.

5. Slowly open the bleed-o valve at test cock #1 until the water ow stops draining from test cock #2. Record the gauge
reading. (It should be 1 PSI or higher.) If the ow from test cock #2 cannot be stopped by opening the bleed-o valve, shut
o valve #1 must be repaired or replaced.

6. Close all test cocks. Open both shut o valves. Remove all test equipment. Replace air inlet valve canopy. Drain test kit.

Figure 3

Customer Service [phone] www.apollovalves.com

7

INSTALLATION, OPERATION, & MAINTENANCE MANUAL

PARTS LIST (1/2” – 2”)

Figure 4

8

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BFMM PVB4A

PVB4A Parts List

Item # Description Qty.

1 Body 1 Consult Factory
2 Label Plate 1 Consult Factory

3 Label Plate Tacks 2 I-2614-00

4 Float Cage 1 F-3844-00 F-3840-00 F-3870-00 F-3873-00

5 Bonnet O-Ring 1 D-4812-00 D-4883-00 D-4887-00 D-4858-00

6 Canopy 1 F-3842-00 F-3838-00 F-3868-00 F-3871-00

7 Check Module O-Ring 1 D-4880-00 D-4744-00 D-4882-00 D-4884-00

8 Check Mod S-Assy (see below) 1 W-9075-05 W-9003-05 W-9074-05 W-9159-05

9 Float FR S-Assy (see below) 1 W-9101-05 W-9096-05 W-9178-05 W-9181-05

10 Bonnet S-Assy (see below) 1 W-9099-05 W-9094-05 W-9176-05 W-9179-05

1/2” 3/4” 1” 1-1/4” 1-1/2” 2”

Individual parts are only available for bulk sales. Please refer to the appropriate repair kits on page 11.

Check Module Sub-Assembly Parts LIst

Item # Description Qty.

11 Check Seat 1 L-7815-00 L-7727-00 L-7813-00 L-7979-00
12 Screw 1 B-3279-00 B-1750-00
13 Disc Retaining Washer 1 E-2372-00 E-2841-00 E-2933-00 E-2860-00

14 Seat Disc 1 D-4771-00 D-4743-00 D-4770-00 D-4853-00

15 Poppet 1 K-4491-00 K-4471-00 K-4483-00 K-4511-00

16 Spring 1 A-2505-00 A-2503-00 A-2510-00 A-2511-00

17 Spring Retainer 1 L-7814-00 L-7726-00 L-7812-00 L-7980-00

1/2” 3/4” 1” 1-1/4” 1-1/2” 2”

Individual parts are only available for bulk sales. Please refer to the appropriate repair kits on page 11.

Part Number

Part Number

Float, Freeze Resistant Sub-Assembly Parts LIst

Item # Description Qty.

18 Float 1 K-4508-00 K-4496-00 K-4516-00 K-4518-00
19 Ball 1 I-6183-00
20 Seal 1 D-4811-00 D-4784-00 D-4859-00 D-4860-00

21 Spring 1 A-1968-00

22 Spring Retainer 1 B-3214-00

1/2” 3/4” 1” 1-1/4” 1-1/2” 2”

Part Number

Individual parts are only available for bulk sales. Please refer to the appropriate repair kits on page 11.

Bonnet Sub-Assembly Parts LIst

Item # Description Qty.

23 Float Guide 1 K-4494-00
24 Float Spring 1 A-2491-00 A-2489-00 A-2501-00 A-2502-00
25 Valve Bonnet 1 F-3843-00 F-3839-00 F-3869-00 F-3872-00

26 Float Guide Screw 1 B-3213-00 B-3281-00

27 Canopy Screws 2 B-3232-00

1/2” 3/4” 1” 1-1/4” 1-1/2” 2”

Part Number

Individual parts are only available for bulk sales. Please refer to the appropriate repair kits on pages 11.

Customer Service [phone] www.apollovalves.com

9

INSTALLATION, OPERATION, & MAINTENANCE MANUAL

Inlet and Outlet Shut-O Valves

Item # Description Qty.

02 Inlet and Outlet NPT Ball Valve

28

with “T” Handle (Standard)

04 Inlet and Outlet Union Ball Valve

w/ “T” Handle (Option)

2

Replacement Handles for Ball Valve Shut-O Valves (02 & 04 options)

“T” Handle W-9732-00 W-9864-00 W-9734-00

Lever Handle Not Available W-9366-00

Locking “T” Not Available W-2394-00 Not Available

Locking Lever Not Available W-9686-00

Stainless steel handles are standard on all Apollo® backow devices.

1/2” 3/4” 1” 1-1/4” 1-1/2” 2”

77B-103-85 77B-104-83 77B-105-83 77B-106-83 77B-107-83 77B-108-83

Not Available W-9525-05 W-9526-05 W-2303-05 W-2304-05 W-2305-05

Part Number

Item # Description Qty.

29 Test Cock M x F (81 metal)

29a Test Cock SAE (81 metal) 78-292-01 (Standard) 78-293-01 (Optional)

2

1/2” 3/4” 1” 1-1/4” 1-1/2” 2”

78-290-01 (Optional) 78-291-01 (Standard)

Part Number

10

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BFMM PVB4A

REPAIR KITS PVB4A 1/2” – 2”

PVB Check Complete Kit QTY

Repair Kit Model Number RK4A12CMC RK4A34CMC RK4A1CMC RK4A112CMC

Item # Ordering Number 4A-003-02 4A-004-02 4A-005-02 4A-007-02

not Shown O-Ring Lubricant I-9016-00

8 Check Module S-Assy 1 W-9075-05 W-9003-05 W-9074-05 W-9159-05

7 Check Module O-Ring 1 D-4880-00 D-4744-00 D-4882-00 D-4884-00

5 Bonnet O-Ring (for PVB) 1 D-4812-00 D-4883-00 D-4887-00 D-4858-00

extra part(s) Cap O-Ring (for DC/RP) 1 D-4881-00 D-4812-00 D-4884-00 D-4885-00

PVB Float and Check Rubber Kit QT Y

Repair Kit Model Number RK4A34PVBR RK4A1PVBR RK4A112PVBR RK4A2PVBR

Item # Ordering Number 4A-004-06 4A-005-06 4A-007-06 4A-008-06

not Shown O-Ring Lubricant I-9016-00

5 Bonnet O-Ring 1 D-4812-00 D-4883-00 D-4887-00 D-4858-00

20 Float Seat Disc 1 D-4811-00 D-4784-00 D-4859-00 D-4860-00

14 Check Module Seat Disc 1 D-4771-00 D-4743-00 D-4770-00 D-4853-00

7 Check Module O-Ring 1 D-4880-00 D-4744-00 D-4882-00 D-4884-00

PVB Float and Bonnet Complete Kit, Top Half of PVB QTY

Repair Kit Model Number RK4A34PVBFB RK4A1PVBFB RK4A112PVBFB RK4A2PVBFB

Item # Ordering Number 4A-004-07 4A-005-07 4A-007-07 4A-008-07

not Shown O-Ring Lubricant I-9016-00

5 Bonnet O-Ring 1 D-4812-00 D-4883-00 D-4887-00 D-4858-00

10 Bonnet S-Assy 1 W-9099-05 W-9094-05 W-9176-05 W-9179-05

9 Float S-Assy 1 W-9101-05 W-9096-05 W-9178-05 W-9181-05

4 Float Cage 1 F-3844-00 F-3840-00 F-3870-00 F-3873-00

6 Canopy 1 F-3842-00 F-3838-00 F-3868-00 F-3871-00

1/2” – 3/4” 1” 1-1/4” – 1-1/2” 2”

1/2” – 3/4” 1” 1-1/4” – 1-1/2” 2”

1/2” – 3/4” 1” 1-1/4” – 1-1/2” 2”

Size

Size

Size

PVB Complete Internals Kit QTY

Repair Kit Model Number RK4A34TPVB RK4A1TPVB RK4A112TPVB RK4A2TPVB

Item # Ordering Number 4A-004-11 4A-005-11 4A-007-11 4A-008-11

not Shown O-Ring Lubricant I-9016-00

8 Check Module S-Assy 1 W-9075-05 W-9003-05 W-9074-05 W-9159-05

7 Check Module O-Ring 1 D-4880-00 D-4744-00 D-4882-00 D-4884-00

5 Bonnet O-Ring 1 D-4812-00 D-4883-00 D-4887-00 D-4858-00

10 Bonnet S-Assy 1 W-9099-05 W-9094-05 W-9176-05 W-9179-05

9 Float S-Assy 1 W-9101-05 W-9096-05 W-9178-05 W-9181-05

4 Float Cage 1 F-3844-00 F-3840-00 F-3870-00 F-3873-00

6 Canopy 1 F-3842-00 F-3838-00 F-3868-00 F-3871-00

Customer Service [phone] www.apollovalves.com

1/2” – 3/4” 1” 1-1/4” – 1-1/2” 2”

Size

11

SALES & CUSTOMER SERVICE:

Phone: [phone]

Fax: [phone]

www.apollovalves.com

AGENCY AREAS COVERED EMAIL PHONE FAX

Mid South Marketing, Inc. VA/MD/Washington, D.C./WV-East [e-mail] 804-213-3801 804-213-3802
Pro Marketing, Inc. NC/SC/TN-East [e-mail] 864-578-4334 864-578-4889
Spirit Group FL (except Panhandle) [e-mail] 407-291-6035 407-299-0378

REGION

Tim Morales & Associates, Inc. AL/FL Panhandle [e-mail] 251-602-8333 251-602-8339

SOUTHEAST

White Wolf Group GA [e-mail] 800-401-4870 888-908-9372

BWC Inc. LA (Commercial Products) [e-mail] 504-734-0229 504-734-3711
Marathon Flow Control TX, OK, KS except Northeast, LA (Industrial) sales@marathonowcontrol.com 214-201-0100 214-201-0104

REGION

Southern Marketing Group MS/TN-West/AR/Bowie Cty.-TX [e-mail] 901-547-0042 901-547-0035

SOUTHERN

FourMation Sales MN/ND/SD/WI-West [e-mail] 763-420-6900 763-420-6993
Marshall-Rodeno Heartland NE/IA (Except River Counties) [e-mail] 303-575-6701 303-575-6706
Midwest Spec KY/OH/PA-West/WV-West [e-mail] 330-538-0406 330-538-0410
New Tech Marketing Northern-IL/WI-East/IN/MI-UP/IA-River Counties [e-mail] 630-378-4300 630-378-0343

REGION

New Tech Marketing MO/Southern IL/Northeast Kansas [e-mail] 618-394-0329 618-394-0427

MIDWESTERN

V.E. Sales Co., Inc. MI (Except Upper Peninsula) [e-mail] 586-774-7760 586-774-1490

Elmco Duddy CA - South [e-mail] 626-333-9942 626-855-4811
Gordon & Associates WA, OR, AK, Northern counties ID [e-mail] 360-566-1470 360-566-1478
HC Fletcher CA - North (AB 1953 compliant product) apollosales@hcetcher.com 800-432-7047 949-660-9072
Marshall-Rodeno Associated CO/WY/MT/ID-SE/UT/NV-NE/NM/El Paso-TX [e-mail] 303-575-6701 303-575-6706
Romatec CA - North PVF (non AB 1953) [e-mail] 877-530-3530 661-588-3534

REGION

WESTERN

Southwest Valves CA (Waterworks and Fire Protection) [e-mail] 559-261-2703 559-261-2711
Southwestern Industrial Sales Co. AZ/Nevada-SW [e-mail] 480-458-5838 480-458-5843
Spec Management Group HI [e-mail] 949-481-4225 949-487-0990

Conroy & Griese Sales, Inc. NY-East/NJ-Nor th [e-mail] 856-663-4440 856-663-6644
Keith Engle & Associates OEM accounts [e-mail] 610-827-9560 610-827-9561
Layden Company NY-Upstate/PA-East/DE/NJ-South [e-mail] 610-363-6657 877-529-3361

REGION

NORTHEAST

Urell, Inc. MA/New England States [e-mail] 617-923-9500 617-926-9414

Active Sales Northwest, Inc. OR, WA, Western ID [e-mail] 541-726-0320 541-726-1148
Biz Sales Company OH, KY, MI, IN, parts of PA, WV, WI [e-mail] 216-595-2888 216-595-2899
Fourmation Sales MN/ND/SD/WI-West [e-mail] 763-262-4700 763-262-4740
Hall Marketing AL, LA [e-mail] 228-547-4637 228-832-6666
J&J Midwest Sales NE, IA, MO, KS [e-mail] 314-422-8419
Jim Benton & Associates AL, FL Panhandle [e-mail] 205-664-1221 205-664-1277
John Hart FL jhart@lascottings.com 772-595-7773 772-489-4305
Larry Perkins TX - Southern lperkins@lascottings.com 936-443-1096
Marel Enterprises New England, NY, DE, MD, VA, DC, pa rts of PA & WV [e-mail] 631-271-1718 631-427-8558
Marshall-Rodeno Associated CO/WY/MT/ID-SE/UT/NV-NE [e-mail] 303-575-6701 303-575-6706
NSC Marketing Group Inc. OK [e-mail] 918-627-5340 918-664-1408

IRRI GATI ON O NLY REP S

Pro Marketing, Inc. NC/SC/TN-East [e-mail] 864-578-4334 864-578-4889
Sherman Dobbs TX - Northern sdobbs@lascottings.com 469-442-8510 972-417-9733
Southern Marketing Group MS/TN-West/AR/Bowie Cty.-TX [e-mail] 901-547-0042 901-547-0035
Spec Management Group CA-South [e-mail] 949-481-4225 949-487-0990
VPC Sales AZ [e-mail] 661-257-3923 661-257-3928

Agences J. Pierre Sylvain, Inc. Quebec [e-mail] 450-655-9588 450-641-2737
Barclay Sales Ltd. British Columbia [e-mail] 604-945-1010 604-945-3030
Conbraco Industries, Canada 178 Pennsylvania Ave., Unit 1, Concord, Ontario L4K 4B1 [e-mail] 905-761-6161 905-761-6666
D & M Mechanical Sales Ontario/East [e-mail] 613-384-7084 613-384-3407
Dynamic Agencies, Ltd. Saskatchewan [e-mail] 306-343-1901 306-343-1901
J. Levandier Sales, Inc. Nova Scotia, New Brunswick, Prince Edward
Island & Newfoundland service@jlevandiersales 506-858-1615 506-858-1084

CANADA

Kern Industries, Ltd. Alberta-North [e-mail] 780-451-2056 780-454-6687
Kern Industries Calgary, Ltd. Alberta-South [e-mail] 403-730-7791 403-239-8179
Key to the North Sales Agency, Inc. Ontario-North [e-mail] 705-524-6714 705-566-0148
Task Controls, Inc. Ontario [e-mail] 416-291-3004 416-754-3481
Tom Beggs Agencies Ltd. Manitoba/NW Ontario [e-mail] 204-953-1900 204-774-6915

BFMMPVB4A 1/12 3,000 CG

current rep list as of 1/11/12